:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#111;background:#f7f7fb}.container{max-width:880px;margin:0 auto;padding:24px}header{margin-bottom:16px}h1{margin:0 0 8px;font-size:28px}p{margin:.5rem 0}.card{background:#fff;border:1px solid #eee;border-radius:12px;padding:16px;margin:16px 0;box-shadow:0 1px 2px #0000000a}.file-label{display:inline-flex;align-items:center;gap:12px;padding:10px 12px;border:1px dashed #bbb;border-radius:8px;background:#fafafa;cursor:pointer}.file-label input{display:none}.preview,.output{width:100%;max-height:360px;border-radius:8px;background:#000;margin-top:12px}.actions{display:flex;gap:12px;margin-top:12px}button{padding:10px 14px;border-radius:8px;border:1px solid #ddd;background:#111;color:#fff;cursor:pointer}button[disabled]{opacity:.6;cursor:not-allowed}.error{margin-top:8px;color:#b00020;font-weight:600}.tags{color:#444}.download{display:inline-block;margin-top:10px;text-decoration:none;color:#0a58ca;font-weight:600}footer{margin-top:32px;color:#666;font-size:14px}.progress{position:relative;width:100%;height:12px;background:#eee;border-radius:999px;overflow:hidden;margin-bottom:12px}.progress-bar{height:100%;background:linear-gradient(90deg,#4f46e5,#22c55e);width:0%;transition:width .25s ease}.progress-text{margin-top:6px;font-size:13px;color:#444}